Loose-leaf binder



ug, 30, 1932. c. A. FINLEY LoosE LEAF BINDER Filed Aug. 14, 1929 2 Sheets-Sheet 1 INVENTOR CHARLES A. F'INLEY y zzls aZ-Z-ovzy Aug. 30, 1932. c. A; FINLEY Loos LEAF BINDER 2 sheetssheet 2 Filed Aug. 14, 1929 /f if a Patented Aug. 30, 1932l f :UNITED STATES PATENT OFFICE CHARLES A. FINLEY, or R-U'rHEREoRD, NEWIJERSEY, AssIGNoR 'ro `isfooRuJir a PEAsE y ooMrANY, or NEW YORK, N..Y., A'coREoRATIoN or NEW YORK j LoosE-LEAE RINEER f Applieati'onma August 14, i929; serialil NQ. A:$35,704. f

This invention relates to the typeof loose leaf binder having telescopic .leaf-holding posts carried by clamp-ing bars and means for moving the leaf-holding posts order Eto bring the posts .into or outofloking relation with the leaves. 'Y p One of the principalfobjec'ts of the vinvention is to provide improved means for lock'- ing the leaves in the binder or vtounlock the leaves therefrom. f v

In the'drawings:

Figfl is a horizontal section 'across the posts of 'a binder embodying my invention, portions ofthe bind show details;

' Fig. 2 is a similar section,'but showing the 4leaf-holding posts lrotated to the "opposite positionfrom that shown in 1. Fig. 2

is a section on the'line 2 -2 ofFig. 3, look- 'ing in the directionof the arrows; 1

"Fig.`3 is a vertical vseetionof'the binder taken through the clamping bars and online lS--'of Fig.` 2;

Fig.'4 is a longitudinal section through a post ofthe binder on line v4 4 ofFig. 5;

Fig.y 5 is a cross section throu Ih the posts of the binder on linej5-5 of ig. 4; and shows a form of sheetv adapted for use in the binder;4 I

1 Figg 6 is a view similar to ing a modified form of sheet. u. p n

The invention is shown embodied in a loose leaf binder containing a pair of clamp- 5, 4showing bars 10 and 11, connected by a telescoping binding post12 having a threaded screw part 13 and acooperating sleeve part 14 adapted to, vary the distance between the clampingbarsi.V In the embodiment shown in the'drawings the screw 13 is mounted in the clamping bar 11, andthe sleeve 14, which is the rotatable part, is mounted in the clamping ybar 10.'` y.' Y* ,e

In y.order to bring the. clamping `bars together by rotation of the sleeve 14 the end of the sleeve mounted within b arlOImay be slotted at 16 to engage any suitable key to be `inserted 'inthe bar 10.y

1A gear wheel 15`is providedon sleeve 14 l:n'dYmay/be housed within the clamping er-being broken away to 'fr' Avtoothed rack`17 may be housedfwithin clamping bar 10. 4'.lhis'rack may have teeth 18 separated into three groups 19, 20and '21:by lands 22 and 23, to transmit motion from gear wheelfl ,to leaf-holding posts 24.

The sheets are mount'edon these telescoping.V leaf-holding f posts 24 'carried vby the clamping bars. Between they c'lamping'bars,

thev lea f-holdi1ig posts are y semi-circular f in cross-section, each leaf-holding post comyprisingia Vsemiicircular rod 25 telescoping into a semi-circular tube 26. v One endV of k.the rod 25 revolves in clamping bar 11,while the end of the tube 26 is rotatably housed in bar 10 and is provided with a gearwheel 27 within the clamping bar 10. The rack17 cooperating with the gear wheels 15 and 27 coordinates and synchronizes the vmovement of thel leaf-holding posts and the binding post in the. following manner. l I

The gear wheel 15 of the bindingY post 12 is4 adapted to cooperate with the central group 20 of teeth on the rack 17, while the gear wheel 27 of one leaf-holdingV post is `radapted to cooperate withfthe end group' of teeth k19 and the other gear wheel 27. with the other endgroup'of teeth 21.

- The relation between the gear 'wheels and the number-of teethin thegroups onv the rack is such thatwhen the gear wheel 15v travels overthe central group 20'from one land 22 or 23 to the other, each leaf-holding post will make half of a complete revolution, and will be moved from the position shown lin Fig. 1 to that shown in Fig. 2, or vice versa. a

The lands are'so located, that they'enable 7the leaf-holding posts to remain stationary after'the latter have made'their half turn while thebindingpost is turned further in the direction which caused' their half turn. Tohold the vrack inV readiness to move the leaf-holding posts in the opposite direction as soonas the ldirection of rotation of thebindring post is reversed, a spring 28 is provided within eachend `of the clampingbar A10.

When the rack 17'has travelled 'asfarvas possible toward eitherv end of theclamplng bar, it will bearlagainst and compress the spring at that end. Y Y f v Plates 29 are provided to close the clamping bars and retain the movable parts carried by the clamping bars.

A binder embodying the invention is especially well adapted to receive loose sheets or leavesB() or a having open slots 31 or 31a and transverse zundercutnotches f3.2, .either formingpart of the slot (seelFigIyor-in addition to the slot (see Fig. 6).

NTheconstruction of the binder having been deseribedtsoperationwill'nowbesettorth Assuming that "the parts are" in 'the' 'position shown in Figs. l and 5 and that leavessimilar.

to those shown in Fig. 5 are beinguse'd'fthef holding; postsl'to make fa' h'alf'revolution',fand

tra

continue-d [rotation` ofith'ekey lcauses contin- -ued -separation of l'the 'clamping bars fall in theviiollovvingzmanner.

As' showninfFi'gl' the spri-ngis'pressing `the `raokf1f7to the rightwhi'chrcauses theirst Atooth notM the central; group "of 4teeth '20 Vto interferewith th'e teeth` on the, gear Wheel 1'5 of the' binding ypostV sleeve. f ltl'wfill; therefore, be obvious that "when the bindingip'ostfsleeve is rotated in acounter-clockvvise direction. the gear wheel on -the binding post shoves the rack toltheright until thegearwheelfl v:meets the land-22. U'Dhe1 partsfareznow inthe posi- 't'ion'foff-Fig olf-ther drawings. Itwvillbe fbserved thatV the:` two :half-round le a'-holding posts 24Lf'haveturnedhalf -a revolution ontheirfown naXes Zand -h'ave, therefore, unlocked thesheets by coming outiof the notches .3% im the :sheets Continued rotation@ ofl the lbinding postsleevewmerelyoausesffthe teeth Ionfthe-gear".wheelvoii-4 the-sleeve to p ush1 the "rack `fl? f against 'the right-hand spring i 28, thus permitting ythe gear -vvheel 115 to turn without causing`V movementof-` the'arack. ln .thisvvaythebindingpost sleevelili-s rotated .relatively tof the bindingA postrod 13,1 and .the -tvvocl'ampingbars are separated.

. In ,thee-similar.: manner the clamping bars rGan-hej brought together fand-fthen half-round yleafjholding jposts rotated` into locking position inthe notches-.320i`v the leaves' by rotat- 4ing-thebinding` post sleeve lllinthe opposite direction. It vvill be-noted thatvtheleaf-holding-posts movefintoor out of .operative posieachother are v"used `instead ofgleaves 30 like those shown in Fig. 5, an appropriate adjustment is made such as the use of a screw and sleeve having right-handed threads instead of the screw 13 and sleeve 14: with left-handed threads, as shown in Figp, so that rotation of rthe fsleevej 4 in` zthje :diriect'ion which caused the deaf-'holding :posts to f assume the position shown in Figs. 2, 3 and 6, will cause the bindingpost to telescope and the clamp,- ing bars to "be "drawnytowardjeach `other tto clamp'upon thelleaves. alclaim.:

1. `A"loose leaf binder comprising a pair of clamping.barsxincombination with rotatable telescoping leaf-holding posts semi-circular inircrossseetion;andameanstfor'irotatingsid laat-:holding posts..` v T :1.

f2. s-A@ loose-:leaf binelerv `comprising :a fpair :of vclamping :bar-sj and rotatable leaf-holding postsfseniieciicular in cross-tsectionl carried between the clam-,ping bars, ainI combination with? leaves :having- :transverse Liundercut notches, andimea-ns fior rotating` saidf leafholdingfposts into onout of enga-gement;iwith said transverse undercut notches.

3. A loose leaf binderfcomprisingfa,pair of'. clamping.r bars:` and ,f rotatable leaflholding pests @semiseirculfar' across-section -fcarnied lbetween fthe; elamping-:.bars, i-n'icembinat-ion with leaves having transverse undercut .note-heaven gejariwheelon-anend ofeachI Lleafihold-nig post cooperating with-.a raektorotate fsaidi-leaf-helding pests :intoor outofreng-age- .ment With'fsaid transverse wndercuti notches. 4. A loose-.leafv fbinder-tcomprising apail tot.clamping,barsta7telescopingbindinggpost @j oiningsaid, clamp-'nigb ars-4 and.;r notatingtelescoping leaf-holding posts seinifcircularjn .crosssectiong in combination-.withmeansassooiatedfvvith-A one ,of tthe olarnpiI-igf` bars y-or Asimultaneously ,telescopi-ng the ,bindinggp'os zand'rotating thefleaf-holfding posts. f 15:.. TA loose leaf-binder comprisingV a-pair of clamping bars, a binding post connected to .saidfzbarsrand .adj ustable for varyingthe distance between ...them,.-and rotatable.l telescoping '.fleai-,hol ding i'.,postsr serni.-t-zircular in ,cross-section, .in .combination-with meansassociatedfwithia; clampingb ar for. synchronizingithe rotation of the"leafhldingpostswith the .varyingof .t-he ,distance 'between the 'clamping'. bars 1 i Y .l f

. 6.y :A- looser leaf. .binder comprising .1 aapair of clamping.bars,.-a.,telescoping bind-inggpost and. rotatable telescoping leaiff-holdingrposts semi-circular in cross-section, Vincombinlation with means associated with`aJ clampinglbar for rotating theleaf-holdingposts simultanefously with fthe .f t'elescoping Y Y'of Ythe.:biriding post, :and limitingthe. rotation of.. :saidff'leaf vholding-posts"tohalfa revolution. g

7. A loose leaf-ibi jdercomprising-saepair lof elamping 'barsfabindingpost connected ytosaid bars and adjustable .-forfvaryingthe distance between them7 and rotatabletelevsize Y clamping bars, loose leaves each having a slot and transverse undercut notches, a binding post connected to said bars and adjustablefor varying the distance between them, passing through the slots in the leaves, and rotatable telescoping leaf-holding posts semicircular in cross-section, in combination with means for synchronizing the clamping of the clamping bars upon the leaves, and the rotation of the leaf-holding posts into engagement with the'transverse undercut notches inthe leaves.

9. In a loose leaf binder having a pair of clamping bars, loose leaves each having a slot and transverse undercut notches, a binding post comprising a threaded screw and a cooperating threaded sleeve carried by opposite clamping bars, one part of said binding post being rotatably mounted, passing through the slots in the leaves, and rotatable telescoping leaf-holding posts semi-circular in cross-section, in combination with means, comprising a gear wheel on said rotatable part of said binding post, a gear wheel on each leaf-holding post and a rack having alr ternate groups of teeth and lands, for simultaneously rotating said rotatable part of said binding post for moving the clamping bars from or toward each other and rotating the leaf-holding posts out of or into engagement with the transverse undercut notches in the leaves.

10. A loose leafbinder having a pair of clamping bars, a binding post comprising a threaded screw and a cooperating threaded sleeve carried by opposite clamping bars, one part of said'binding post being rotatably mounted, and a gear wheel on said rotatable part, in combination with telescoping rotatable leaf-holding posts semi-circular in cross-section mounted between the clamping bars, a gear wheel on one end of each leafholdingrpost and a rack having groups of teeth separated by lands cooperating with the gear wheels, the relation between the gear wheels on the binding post and the leaf-holding posts and the groups of teeth on the rack being such that when the rotatable part of the binding post is rotated, the leaf-holding posts will make only half a complete revolution.

11. A loose leaf binder having a pair of clamping bars, a binding post comprising a threaded screw and a cooperating threaded sleeve carried by opposite clamping bars, one part of said binding post being yrotatably mounted, and a gear wheel on said rotatable part, telescoping rotatable leaf-holding posts semi-circular in cross-section mounted between the clamping bars, a gear wheel on one end of each leaf-holding post and a toothed rack having groups yof teeth separated by lands cooperating with the gear wheels, in combination with leaves having transverse undercut notches, the relation between the gear wheels on the binding post and the leafholding posts and the groups of teeth on the rack being such that when the rotatable part of the binding post is rotated, the leaf-holding posts are rotated into or out of engagement with said transverse undercut notches.

vIn testimony'whereof I have signedmy name to this specification.

CHARLES A. FINLEY. 

